DocumentCode
1032534
Title
Validity of kL evaluation by stopband method for ¿/4 DFB lasers with low reflecting facets
Author
Kinoshita, J.
Author_Institution
Toshiba Corporation, Electron Device Engineering Laboratory, Yokohama, Japan
Volume
23
Issue
10
fYear
1987
Firstpage
499
Lastpage
501
Abstract
The validity of the kL values estimated from the subthreshold stopband width of ¿/4-shifted DFB lasers with low reflecting facets is discussed quantitatively. The misestimation probability is calculated by varying the phase of the residual field reflectances at both facets. The results show that the residual reflectivity should be less than 0.05% to estimate the kL value validly when the true value of kL is less than 2.0.
Keywords
distributed feedback lasers; reflectivity; semiconductor junction lasers; DFB lasers; coupling coefficient; low reflecting facets; misestimation probability; residual field reflectances; residual reflectivity; semiconductor laser; subthreshold stopband width; ¿ L values;
fLanguage
English
Journal_Title
Electronics Letters
Publisher
iet
ISSN
0013-5194
Type
jour
DOI
10.1049/el:19870362
Filename
4257693
Link To Document